*{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#1a1a2e;--panel:#16213e;--border:#0f3460;--accent:#00d4ff;--text:#e0e0e0}
body{font-family:sans-serif;background:var(--bg);color:var(--text);padding:20px;font-size:16px}
.c{max-width:820px;margin:0 auto}
.hdr{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;gap:10px;flex-wrap:wrap}
.hdr h1{color:var(--accent);font-size:clamp(20px,4vw,26px);margin:0}
.help-btn{text-decoration:none;background:var(--border);color:var(--accent);border:1px solid var(--accent);border-radius:8px;padding:8px 16px;font-size:14px;font-weight:bold;white-space:nowrap}
.help-btn:hover{background:#1a4e80}
.welcome{text-align:center;border-color:var(--accent);background:linear-gradient(135deg,#16213e,#0f3460)}
.welcome h2{color:var(--accent);margin-bottom:10px}
.welcome p{color:#ccc;font-size:15px;margin-bottom:14px}
.test-btn{background:var(--accent);color:var(--bg);border:none;border-radius:12px;padding:14px 28px;font-size:17px;font-weight:bold;cursor:pointer}
.test-btn:hover{background:#00b8d9}
.p{background:var(--panel);border-radius:12px;padding:20px;margin-bottom:16px;border:1px solid var(--border)}
.p h2{font-size:18px;margin-bottom:14px;color:var(--accent)}
.st{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px}
.st label{display:flex;flex-direction:column;gap:6px;font-size:14px;color:#aaa}
.st select,.st input{background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:12px 14px;font-size:16px;min-height:48px;width:100%}
.st input[type=number]{padding-right:40px;min-width:90px}
.st .bass-toggle{background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:12px 14px;font-size:14px;min-height:48px;width:100%;display:flex;align-items:center;gap:8px}
.st .bass-toggle input[type=checkbox]{width:20px;height:20px;min-height:20px;min-width:20px;padding:0;margin:0;accent-color:var(--accent);flex-shrink:0}
.dz{border:2px dashed var(--border);border-radius:12px;padding:24px;text-align:center;cursor:pointer;margin-bottom:12px}
.dz:hover{border-color:var(--accent)}
.dz.do{border-color:var(--accent);background:var(--border)}
.dz p{color:#888;font-size:14px}
.cl{display:flex;flex-direction:column;gap:4px;max-height:450px;overflow-y:auto}
.cr{display:flex;align-items:center;gap:8px;background:var(--bg);padding:8px 12px;border-radius:8px;border:1px solid var(--border);transition:background .15s}
.cr.pl{background:var(--border);border-color:var(--accent);box-shadow:0 0 8px rgba(0,212,255,.3)}
.cr.co{display:none}
.cr input[type=text]{width:90px;background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:10px;font-size:17px;font-weight:bold;text-align:center;min-height:48px;flex-shrink:0}
.cr select{background:var(--panel);color:var(--text);border:1px solid var(--border);border-radius:6px;padding:10px;font-size:14px;min-height:48px;flex-shrink:0}
.cr .bn{color:#666;font-size:13px;min-width:26px;flex-shrink:0}
.cr .nt{font-size:12px;color:#888;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cr .rp{background:var(--border);color:var(--accent);border:1px solid var(--border);border-radius:6px;padding:10px 14px;cursor:pointer;font-size:16px;flex:0 0 auto;flex-shrink:0;min-height:48px;min-width:44px;max-width:60px}
.cr .ib{background:var(--border);color:var(--accent);border:1px solid var(--border);border-radius:6px;padding:10px 14px;cursor:pointer;font-size:16px;flex:0 0 auto;flex-shrink:0;min-height:48px;min-width:44px;max-width:60px}
.cr .rm{background:#e94560;color:#fff;border:none;border-radius:6px;padding:10px 14px;cursor:pointer;font-size:16px;flex:0 0 auto;flex-shrink:0;min-height:48px;min-width:44px;max-width:60px}
.sr{background:var(--border);border-radius:8px;padding:8px 16px;margin:4px 0;display:flex;align-items:center;gap:8px;cursor:pointer}
.sr:hover{background:#1a4e80}
.sr .tg{color:var(--accent);font-size:12px;min-width:14px;flex-shrink:0}
.sr .sl{color:var(--accent);font-size:14px;font-weight:bold;flex:1;text-transform:uppercase;letter-spacing:1px;min-width:0;overflow:hidden;text-overflow:ellipsis}
.sr .ren{background:var(--border);color:var(--accent);border:1px solid var(--accent);border-radius:6px;padding:6px 10px;cursor:pointer;font-size:12px;flex-shrink:0}
.sr .dup{background:var(--border);color:var(--accent);border:1px solid var(--accent);border-radius:6px;padding:6px 10px;cursor:pointer;font-size:12px;flex-shrink:0}
.sr .rm{background:#e94560;color:#fff;border:none;border-radius:6px;padding:6px 10px;cursor:pointer;font-size:14px;flex-shrink:0}
.sr.co .tg{transform:rotate(-90deg)}
.ab{background:var(--border);color:var(--accent);border:1px solid var(--accent);border-radius:8px;padding:12px 20px;cursor:pointer;font-size:16px;margin-top:8px;min-height:48px}
.ac2{display:flex;gap:10px;justify-content:center;margin-top:14px;flex-wrap:wrap}
.b{padding:14px 28px;border-radius:8px;border:none;cursor:pointer;font-size:16px;font-weight:bold;min-height:52px}
.bd{background:var(--accent);color:var(--bg)}
.bp{background:var(--border);color:var(--text)}
.bs{background:#e94560;color:#fff}
.bw{background:var(--border);color:var(--accent);border:1px solid var(--accent)}
.bw:hover{background:#1a4e80}
.bw:disabled{opacity:.4;cursor:not-allowed}
.b:disabled{opacity:.4;cursor:not-allowed}
.pb{background:var(--bg);color:var(--accent);border:1px solid var(--border);border-radius:6px;padding:10px 16px;cursor:pointer;font-size:14px;min-height:44px}
.sb{text-align:center;margin-top:12px;font-size:14px;color:var(--accent);min-height:20px}
.fi{display:none}
.mo{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.6);display:none;align-items:center;justify-content:center;z-index:1000;padding:20px}
.mo.sh{display:flex}
.md{background:var(--panel);border-radius:12px;padding:24px;max-width:400px;width:100%;border:1px solid var(--border);text-align:center}
.md h3{color:var(--accent);margin-bottom:14px;font-size:18px}
.md p{margin-bottom:18px;color:#ccc;font-size:15px}
.mb{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.mbt{padding:12px 22px;border-radius:8px;border:none;cursor:pointer;font-size:14px;font-weight:bold;min-height:48px}
.mbl{background:#e94560;color:#fff}
.mba{background:var(--border);color:var(--accent);border:1px solid var(--accent)}
.mbc{background:var(--bg);color:#888;border:1px solid #333}
.footer{max-width:820px;margin:24px auto 0;padding:20px;text-align:center;border-top:1px solid var(--border)}
.footer p{color:#aaa;font-size:14px;margin-bottom:14px;line-height:1.6}
.footer a{color:var(--accent);text-decoration:none}
.footer strong{color:#fff}
.social-links{display:flex;gap:8px;justify-content:center;flex-wrap:wrap}
.social-links a{display:inline-flex;align-items:center;gap:4px;background:var(--panel);color:var(--accent);border:1px solid var(--border);border-radius:8px;padding:8px 14px;font-size:13px;text-decoration:none}
.social-links a:hover{background:var(--border);border-color:var(--accent)}
/* === Help page styles === */
.help-page{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);color:var(--text);max-width:820px;margin:0 auto;padding:20px;line-height:1.6;font-size:15px}
.help-page h1{color:var(--accent);border-bottom:1px solid var(--border);padding-bottom:10px;font-size:24px}
.help-page h2{color:var(--accent);margin-top:30px;margin-bottom:10px;font-size:18px}
.help-page h3{color:var(--accent);margin-top:20px;margin-bottom:8px;font-size:16px}
.help-page p{margin-bottom:12px}
.help-page ul,.help-page ol{margin-bottom:16px;margin-left:20px}
.help-page li{margin-bottom:6px}
.help-page code{background:var(--panel);color:var(--accent);padding:2px 6px;border-radius:4px;font-family:'Courier New',monospace;font-size:14px}
.help-page pre{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:14px;overflow-x:auto;margin:12px 0}
.help-page pre code{background:none;color:var(--text);padding:0;font-size:13px}
.help-page table{border-collapse:collapse;width:100%;margin:12px 0}
.help-page th,.help-page td{border:1px solid var(--border);padding:8px 12px;text-align:left;font-size:14px}
.help-page th{background:var(--border);color:var(--accent)}
.help-page tr:nth-child(even){background:var(--panel)}
.help-page a{color:var(--accent)}
.help-page hr{border:none;border-top:1px solid var(--border);margin:24px 0}
.help-page strong{color:#fff}
.help-page .tip{border-left:3px solid var(--accent);background:var(--panel);padding:10px 14px;border-radius:0 8px 8px 0;margin:14px 0;font-size:14px}
.back-btn{display:inline-block;background:var(--border);color:var(--accent);border:1px solid var(--accent);border-radius:8px;padding:8px 16px;text-decoration:none;font-size:14px;margin-bottom:20px}
.back-btn:hover{background:#1a4e80}
@media(max-width:640px){body{padding:12px;font-size:15px}.p{padding:16px}.p h2{font-size:16px}.st{grid-template-columns:1fr 1fr;gap:12px}.st label{font-size:13px}.st select,.st input{font-size:16px;padding:12px;min-height:48px}.hdr h1{font-size:18px}.help-btn{padding:6px 12px;font-size:12px}.welcome p{font-size:13px}.test-btn{padding:12px 20px;font-size:15px;width:100%}.cr{padding:9px 8px;gap:4px;flex-wrap:nowrap;overflow-x:auto}.cr input[type=text]{width:70px;font-size:16px;padding:8px;min-height:50px}.cr select{font-size:13px;padding:8px;min-height:50px}.cr .bn{font-size:10px;min-width:16px}.cr .nt{display:block;font-size:9px;flex:0 0 auto;max-width:46px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.cr .rp{padding:9px 12px;font-size:15px;flex:0 0 auto;min-height:50px;min-width:44px;max-width:56px}.cr .ib{padding:9px 12px;font-size:15px;flex:0 0 auto;min-height:50px;min-width:44px;max-width:56px}.cr .rm{padding:9px 12px;font-size:15px;flex:0 0 auto;min-height:50px;min-width:44px;max-width:56px}.sr{padding:8px 10px;gap:6px}.sr .sl{font-size:13px}.sr .dup{padding:4px 8px;font-size:11px}.sr .ren{padding:4px 8px;font-size:11px}.sr .rm{padding:6px 8px;font-size:12px}.ab{padding:10px 16px;font-size:14px;width:100%}.b{padding:12px 20px;font-size:14px;width:100%}.pb{padding:8px 12px;font-size:13px;width:100%;text-align:center}.social-links a{padding:6px 10px;font-size:12px}.md{padding:18px}.mbt{padding:10px 16px;font-size:13px;width:100%}.help-page{padding:12px;font-size:14px}.help-page h1{font-size:20px}.help-page h2{font-size:16px}.help-page h3{font-size:15px}.help-page th,.help-page td{padding:6px 8px;font-size:13px}.help-page pre{padding:10px}.help-page pre code{font-size:12px}.help-page code{font-size:12px}}
@media(max-width:400px){.st{grid-template-columns:1fr}}